The salary of a person is Rs.84000 per month, he uses his own car for his traveling work. It delivers 80% of the dealer claimed mileage (25 km/litre). The cost of fuel is Rs.84 per litre. On an average, he travels a distance of around 1500 km per month and spends around Rs.2800 on other expenses while travelling. What percentage of his salary is used for these expenses (correct to one decimal place)?